How Do Building Automation Systems Work?


Building automation systems monitor various components inside the structure of a house, for example, heating, ventilation, air conditioning (HVAC). The performance and durability of HVAC systems are important for today’s construction activity.


The primary objective of this form of infrastructure is to enhance the performance of the network, reduce costs and increase protection. Many of these parts are put together by a centralized building management program, but this definition is a simplification of what is actually going on behind the scenes.


Main Components of a BAS

Building Automation Systems can be added to an existing structure either during the initial construction or through a retrofitting process. It uses five categories of components to provide a smart environment for construction.


These devices control temperature, humidity, the number of people in a room, the level of lighting and other values. The sensors transfer this information on to central controllers.


The part acts as the BAS “spirit.” It gathers sensor data and then sends commands to HVAC devices, lighting systems, safety alarms and other connected parts.


Output devices:
Once a command is sent out by the controller, actuators and relays go into action to meet the requirements. They can, for example, minimize or increase heating in a specific part of the building, dim lighting in empty offices or switch on the air conditioning before people get to work.


Communication protocols:
The BAS uses a specific language that is understood by individual components of the system. The most widely used solutions include BACnet and Modbus.


Terminal interface:
With that interface, users can communicate with the BAS. It presents information so users can monitor the building condition or choose to manually override settings.


Importance of User Interfaces

The terminal interface is an essential part of an efficient automation framework for the house. Organizations need a way to access the sensor-generated data, figure out whether issues need troubleshooting and search for areas of inefficiency that they can fix. A poorly designed user interface can not provide the access or insight required for a company to understand its BAS performance levels.


Modern visual data overlays offer information in a user-friendly way to the building managers. Managers will respond rapidly to changes because day-to-day monitoring of what’s going on in the system is easy to see. Communication from machine to machine guides decision-makers on objective information.


Functions of a BAS

A BAS primarily has the purpose of providing control over heating, cooling, ventilation, lighting and other critical construction systems. However, construction automation systems often track their individual components to alert construction managers about identified issues. The system may try to solve a problem automatically, depending on the issue, before getting a human involved. Continuously track and optimize the system’s own efficiency, although the building manager can make changes as necessary.

Types of Data a BAS Collects and Its Applications


A BAS has access to a vast array of sensor data, depending on the smart systems installed in the building and the business needs. Temperature is one of the most frequent tracked data points, as this information is critical to proper climate control. To ensure the right balance of external and internal air, the indoor air quality is controlled, and this process is most also used to regulate the moisture in the structure.


Pressure and chemical sensors allow the device to solve air quality issues or to discover issues with the building’s mechanical aspects. The security system relays data which may indicate potential intruders, such as movement in buildings supposedly empty.


Alarms can come from many parts of a building, like power supplies, elevators, or electronic doorways. When it meets other criteria, such as when the power of a data center is gone out and it is transferred to an uninterrupted supply, the data is passed on to the UI.

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